InChI=1S/C33H34O18/c34-16-7-14(8-17(35)11-16)2-1-13-3-5-18(6-4-13)48-32-27(42)24(39)23(38)21(50-32)12-47-31(46)15-9-19(36)22(37)20(10-15)49-33-28(43)25(40)26(41)29(51-33)30(44)45/h1-11,21,23-29,32-43H,12H2,(H,44,45)/b2-1+